Mathematics
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OpenStudy (anonymous):
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OpenStudy (anonymous):
Functions 1 and 2 are shown below:
Function 1: f(x) = −3x^2 + 2
Which function has a larger maximum? Type your answer as 1 or 2.
Vocaloid (vocaloid):
well, the graph shows you the maximum value of function 2, which is a little bit above 4, agreed?
Vocaloid (vocaloid):
so to find the maximum value of function 1, we let x = 0 and calculate function 1
OpenStudy (anonymous):
Yes.. ok one second
OpenStudy (anonymous):
The maximum for function 1 would be 0, right?
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OpenStudy (anonymous):
@Vocaloid
OpenStudy (anonymous):
Can someone help?
OpenStudy (sohailiftikhar):
ok
OpenStudy (anonymous):
Can you help? @sohailiftikhar
OpenStudy (sohailiftikhar):
where is function 1
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Vocaloid (vocaloid):
function 1 is −3x^2 + 2
when x = 0, what is function 1? (it's not 0)
Vocaloid (vocaloid):
-3(x^2) + 2 = -3(0^2) + 2 = ?
OpenStudy (anonymous):
I keep getting 0....??
OpenStudy (anonymous):
@Vocaloid
Vocaloid (vocaloid):
you're forgetting the 2...
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Vocaloid (vocaloid):
let's break it into two parts, ok?
first part: -3(0^2) = ?
OpenStudy (sohailiftikhar):
lol
OpenStudy (anonymous):
0?
OpenStudy (anonymous):
Please tell me its 0... 0 raised to the 2nd power is 0... 0 times -3 is 0... what am i doing wrong???
OpenStudy (sohailiftikhar):
when x=1 then it will be funtion 1
f(1)=-3(1)+2=-1
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OpenStudy (sohailiftikhar):
now funtion 2 x=2 f(2)=-3(2)^2+2=-4
OpenStudy (sohailiftikhar):
so function 2 has maximum value
OpenStudy (anonymous):
So the answer is 4? @Vocaloid @sohailiftikhar
Vocaloid (vocaloid):
nope, not quite... we're looking at function 1
OpenStudy (sohailiftikhar):
your question is which function has a maximum value to answer is function 2
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Vocaloid (vocaloid):
function 1 = -3(0^2) + 2
the first part is -3(0^2) = 0
the second part is + 2
so add them together to get
Vocaloid (vocaloid):
the question is asking to find the maximum values of function 1 and 2, then to see which maximum is higher...
OpenStudy (anonymous):
Yes max for function 1 is -1 and max for function 2 is 4... So function 2 maximum is higher
Vocaloid (vocaloid):
well, yeah, function 2 has the higher maximum
OpenStudy (sohailiftikhar):
yes
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Vocaloid (vocaloid):
function 1 has the maximum value of 2 because 3(0^2) + 2 = 2
OpenStudy (anonymous):
Oh!!!!!!!!! So for my answer I type 2...cuz function 2 is 4?
Vocaloid (vocaloid):
yes...
OpenStudy (anonymous):
Thats why i kept getting it wrong.. for my answer i kept putting 4
OpenStudy (anonymous):
Thank you so much guys!!!!
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OpenStudy (sohailiftikhar):
lol np